Related Experiment Video

Updated: Jun 6, 2026

Method for the Isolation and Identification of mRNAs, microRNAs and Protein Components of Ribonucleoprotein Complexes from Cell Extracts using RIP-Chip
13:34

Method for the Isolation and Identification of mRNAs, microRNAs and Protein Components of Ribonucleoprotein Complexes from Cell Extracts using RIP-Chip

Published on: September 29, 2012

Nucleocytoplasmic mRNP export is an integral part of mRNP biogenesis

Petra Björk1, Lars Wieslander

  • 1Department of Molecular Biology and Functional Genomics, Stockholm University, 106 91 Stockholm, Sweden.

Chromosoma
|November 17, 2010
PubMed

Insights

Messenger ribonucleoprotein (mRNP) export and biogenesis are linked. Key events at the gene and nuclear pore complex integrate mRNP export into gene expression, influencing cytoplasmic fate.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Nucleocytoplasmic transport is essential for gene expression.
  • Messenger ribonucleoprotein (mRNP) biogenesis and export are tightly regulated processes.
  • The Balbiani ring genes provide a model system for studying these events.

Purpose of the Study:

  • To elucidate the coupling between mRNP biogenesis and export.
  • To understand the roles of the gene locus and nuclear pore complex in mRNP export.
  • To investigate how cotranscriptionally added components affect cytoplasmic mRNP fate.

Main Methods:

  • Analysis of Balbiani ring genes.
  • Studying transcription, pre-mRNA processing, and hnRNP protein interactions.
  • Investigating nuclear pore complex translocation and cytoplasmic fate.

Main Results:

  • mRNP biogenesis and export are closely coordinated from transcription to cytoplasmic release.
  • Specific cotranscriptionally added components are retained in mRNPs and influence their cytoplasmic behavior.
  • Events at the gene and nuclear pore complex are critical for integrating export into gene expression.

Conclusions:

  • The spatial, temporal, and structural aspects of mRNP biogenesis and export are crucial for gene expression.
  • Understanding these processes at the Balbiani ring genes offers insights into fundamental cellular mechanisms.
  • Integrated regulation ensures proper mRNA processing, export, and function.

More Related Videos

Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection11:32

Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection

Published on: December 4, 2010

Visualization of Endoplasmic Reticulum Localized mRNAs in Mammalian Cells10:24

Visualization of Endoplasmic Reticulum Localized mRNAs in Mammalian Cells

Published on: December 17, 2012

Related Concept Videos

Nuclear Export01:42

Nuclear Export

The nucleus restricts several proteins within and allows others to pass. The restricted proteins possess a nuclear retention sequence or NRS, anchoring them to the nuclear lamins and preventing their transport to the cytosol. The non-restricted proteins, after their synthesis, are transported to their site of action, such as the cytosol or other organelles, with the help of nuclear export signals or NES.
NES are of three types- the canonical 10-residue long leucine-rich signal and other...
Nuclear Export of mRNA02:31

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
Nuclear Export of mRNA02:31

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
Regulated mRNA Transport02:22

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
Regulated mRNA Transport02:22

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
Nuclear Protein Sorting01:34

Nuclear Protein Sorting

Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...